chor 1 2 chor 2 3 mu 1 2 3 chor 3 10 iv 2 4 mu 1 4 5 # cd^-1 mu 3 3 6 # cdcd mu 6 5 7 chor 7 4 mu 2 3 8 # dcd pwr 3 5 9 mu 8 9 10 mu 10 6 11 com 1 11 12 chor 12 1